Ntawm no yog kev txheeb xyuas kev sib txawv ntawm kev sivUSBthiabRs232Raws li kov cuam tshuam rau cov neeg saib, tsom kom meej txog cov kev cai thiab lawv cuam tshuam:
Qhov sib txawv ntawm USB thiab Rs232 rau kov Saib Xyuas Kev Sib Tham:
Siv raws cai raws tu qauv & architecture:
USB (Universal Serial Bus): A Cov Qauv Tsheb Loj-Ceev Serialtsim los txuas cov peripherals rau cov tshuab (zoo li pcs) . nws txhawb nqaNtau yam khoom sivNtawm ib tus tswv cuab tus tswv cuab (ntawm cov chaw muab khoom),Kub nruj, thiab bidirectional kev sib txuas lus .
Rs232 (Cov Qauv Pom Zoo 232): A Tsoos serial kev sib txuas lus tus qauv txheemfeem ntau rauTaw tes-rau-taw teskev sib txuas ntawm cov ntaub ntawv Terminal Cov Khoom Siv (DTE) thiab cov ntaub ntawv sib txuas lus (DCE) . nws txhais tau tias lub zog, thiab lub cev txuas, thiab lub cev sib txuas.}}
Cov ntaub ntawv hloov nrawm & efficiency:
USB:Tseemsai.
USB 1.1: Kev nrawm nrawm (1.5 MBPS), puv nrawm (12 Mbps)
USB 2 . 0: Kev Kub Ceev (480 Mbps) - feem ntau ntawm kev sib chwv.
USB 3.0+ (tsawg dua rau cov pib yooj yim): superspeed (5 gbps +) {3} {{3}
Cov pob ntawv muaj txiaj ntsig zoo nrog kev ua yuam kev tshawb xyuas {1} ruited {1} Cov ntaub ntawv me me tsim los ntawm kov cov xwm txheej {}}
Rs232:Ntauyuag.
Raug nrawm npaum li ntawm 300 bps rau 115 . 2 kbps (qee zaum mus txog rau 230.4
Simple serial stream of bits. Adequate for basic touch coordinate reporting but lacks the efficiency and speed of USB.
Txhim Kho & Kev Teeb Meem:
USB:
Plug-thiab-Ua Si (PNP):Tsis siv neeg ntaus ntawv nrhiav thiab tsav tsheb teeb tsa los ntawm cov kev ua haujlwm niaj hnub (OS) yog qauv .
Cov qauv qauv tsav tsheb:Feem ntau siv cov OS-muabHID (tib neeg interface ntaus ntawv)tsav tsheb hauv chav kawm . Tus ntsuas tus coj nthuav tawm nws tus kheej ua cov cuab yeej HID
Rs232:
Kev tuav cov teeb tsa:Yuav tsum tau ua rau teeb tsa cov kev sib txuas lus ntawm ob qho tib si kov, tsis txhob siv tus coj, ntws tswj {} mismatches ua rau tsis ua hauj lwm.
Dedicated tsav tsheb xav tau:Feem ntau yuav tsum teeb tsa ntawm ib qho tshwj xeebTus neeg muag khoom-muab cov tsav nkoj chaw nres nkojNtawm tus tswv pc los txhais cov ntaub ntawv serial mus rau kev kov kov rau lub OS {}}.
CABLING & KEV LAG LUAM:
USB:Siv cov qauv, hom, pheej yig cables (hom-a rau hom-b micro / mini, lossis ntau hom-} Cable txwv (feem ntau<5m without active extension/repeaters).
Rs232:Kev ua ib txwm siv DB9 lossis DB25 cov constors {{2} Yuav tsum muaj kev sib txuas lus tshwj xeeb ntawm kev sib txuas nrog PC-to-tok-rau-kov-maub-to-confoller) {} txhawb nqantev cable khiavntseeg tau (feem ntau ua kom 15-25 Metres, tuaj yeem txuas ntxiv nrog cov tswv yim zoo / cov tsav tsheb).
Kev xa khoom fais fab:
USB:Muab+5 v zog(Txog li 500ma rau USB 2 .} 0, ntau dua rau tom qab version) dhau ntawm cable. Qhov no tuaj yeem nquagFais fab tus kov maub losncaj qha, tshem tawm qhov xav tau ntawm lub zog cais adapter .
Rs232: Tsis muab lub zograu cov khoom sib txuas . Tus kov tus tswj yuav tsum tau cais lub zog (feem ntau yog sab nraud fais adapter) .
Txhawb Nqa Cov Txheej Txheem:
USB:Ubiquitous thiab ib txwm txhawb nqa thoob plaws txhua lub tshuab ua haujlwm niaj hnub no (Linux, Android, Chid} Cov tub ntxhais kawm ntawv ".
Rs232:Yuav tsum OS kom muaj lub chaw nres nkoj tsav tsheb sib luagthiabCov kev kov tshwj xeeb tswj hwm {{0} Kev txhawb nqa feem ntau yog cov neeg tsav tsheb zoo tshaj plaws rau lub cev niaj hnub tsis ua pov thawj com portions.
Latency & Lub Luag Haujlwm:
USB:Feem ntau muajqis duaVim vim muaj kev nrawm nrawm thiab ua raws li kev cai tuav hauv OS . pom tau ntau yam rau kov lub tswv yim.
Rs232:Tuaj yeem qhiame ntsis siab duaVim tias qis dua nrawm thiab qhov muaj peev xwm ua haujlwm ntawm cov lus txhais lus, txawm tias feem ntau tseem siv tau rau ntau daim ntawv thov .
Suab nrov tiv thaiv kab mob & ib puag ncig:
USB:Kev nthuav tawm sib txawv muaj cov suab sib txawv uas tsis muaj suab nrov. rhiab rau cable zoo thiab ntev rau high-speed modes.
Rs232:Siv kujCov Voltage Voltage(Feem ntau ± 3V rau ± 15V) uas tuaj yeem muab tauzoo dua cov suab nrov tsis muaj zogtshaj qhov ntev ntev lossis hauv hluav taws xob tsis muaj sij hawm piv rau ib leeg-voltage cov ntsiab lus tsis muaj zog {2} .
Ntsiab lus xaus:
| Yam zoo | USB Kov Sib Tham | Rs232 Kov interface |
|---|---|---|
| Daim Ntawv Kho Mob | Cov Tsheb Loj-Ceev Serial | Tsoos taw tes-rau-point serial |
| Hov ceev | Siab (txog li 480 Mbps rau USB 2.0) | Tsawg (feem ntau 9.6kbps - 115.2 Kbps) |
| Kev muab cia | Plug-thiab-Ua Si (HID Drive Drive) | Kev tuav cov neeg tsav tsheb, tus muag khoom muag |
| Hlua | Qauv, nquag, luv dua | Kev faib tawm cov serial cable, ntev khiav |
| Hwjchim | Muab +5 v zog rau maub los | Yuav tsum tau cais fais fab |
| Txhawb nqa | Haiv neeg ntawm HID (Zoo heev) | Tus tsav tsheb (feem ntau zoo) |
| Chaw khaws khoom | Feem ntau qis dua | Feem ntau me ntsis siab dua |
| Suab nrov tiv thaiv | Zoo (sib txawv) | Zoo heev (HEEV Voltage Viav) |
| Koom xwm siv thawj zaug | Cov neeg siv khoom siv, ua lag luam, kiosks | Muaj, Txoj Cai Zoo, Ntev |
Xaus:
Qhov kev xaiv ntawm USB thiab Rs232 nyob ntawm cov cai yuav tsum tau ua:
USB yog qhov kev xaiv uas xav tauRau cov ntawv thov niaj hnub yog vim nws qhov chaw tshaj tawm, kev kub siab rau cov khoom siv tsis zoo, thiab kev siv hluav taws xob tsis zoo
Rs232 tseem cuam tshuamHauv cov xwm txheej tshwj xeeb: ib puag ncig uas tau xav tau ntev cable los yog kev sib txuas lus tseem ceeb uas tsuas yog muaj kev sib txuas lus ntawm cov txiaj ntsig zoo ntawm cov txiaj ntsig {}}